Valve mechanism.



o. J. PEMBROKE.

VALVE MECHANISM. APPLICATION FILED DEG. 30,1912.

1 1 02,605 Pate tediiiu 7, 1914.

a Mum W0 6 Ch WELLS Fl/3.757530% Lu-Wazoo an UNITED STATES PATENT oF IcE.

CHARLES J. PEMBROKE, OF ROCHESTER, NEW YORK.

VALVE MECHANISM.

Specification of Letters Patent.

Patented July '7, 1914'.

Original application filed August a, 1910, Serial No. 575,282. Divided and this application-filed December I so, 1912;. Seria1No.739,1 88. I

'To all whom it may concern:

' Be it known that 1, CHARLES J. PEM- BROKE, of Rochester, in thecounty of Monroe and State of New York, have invented certain new andjuseful'. Improvements in ".Valve Mechamsms; and

- the reference-numerals marked thereon.

' binations of parts;

My present invention. relates 'to internal combustion engines v.a'nd more particularly to valve mechanisms for such engines, and it has for its object. to fn vide such amechanism in connection .with a lubricating system that will profusely oil the working parts without waste,jand at the same time operate to'silence the noise usually attendant upon the .operationof valve mechanism. ,To thesegand other ends the invention consists'in certain provements and com ll as will be hereinafter moreifully described, the novel features being pointed out in the claims at the end of the specification,

In the drawings: nal central sectionv same being constructed in accordance with vention; Fi 2 isasectional view .through one of the; valve units. taken in .a plane at right angles to 1 and on an enlarged scale. Similar reference, numerals throughout the several figures indicate the same parts.

my prior application, Serial No. 575,282, filed August 3,1910, lubricating features applicable generally to engine structure, and reference ,is'madetothat application, the complete system of lubricatioriof .which the present disclosure is a part and with whichthe present invention is well adapted for use. Only so; much of .the construction I there completely illustratedis shown in the accompanying" drawings "as is necessary to gain an understanding of the .'valve mechanism alone and, referring more artlcularly to the drawings, castin 3 thecylinders, and e aust valve heads,

4* and 5 the. intake Figure -1 is 18. longitudie hrough thevalve mechanism of a multiple .cylinder gas engine, the

the plane of section of Fig.

in which I dis lose.

or its resultinglpatent', for- 1' indlca-tes t e cylinder" respectively, which may themselves be of the usualtype, and 6 and 7 the intake and exhaust ports that they control.

Arranged preferably at one side of the cylinder t e axes of'the. cylinders is a-tubular jacket .8 1n the upper and lower ends of which are block and to extend parallel with the. bearings 9 and 10 of a jack vshaft 1*1 -:which it incloses, the latter being driven-by any suitable. means of the engine through drivmg connection at' its lower end while at its upper end, above the bearing, is j a beveled gear 14: in a gear case* .15.that connects the 1acket 8 with a similar tubular jacket, 16 extending across .the cylinderheads of the engine, the said gear case beng preferably formed'asshown by constituent parts on the jackets. I The gear 14 on the jack shaft drives a gear- 17 inthe gear. case mounted on theend of a cam shaft'18 and closed by.the, jacket and having end bearings 19 .and intermediate bearings 20 contained and supported therein.

. A pipe 21 forms a circulatin' passage for conducting oil from a suitable source of sup 1y to thecamf shaft jacket 16 which it preterably joins 'at. a point near the-front end thereof, as shown.

The valves 4 of the engine are carried by valve' casings 22 ably easil removable from the cylinder fitted within and preferhead 23 intowhichthey'are secured, 1n the present instance, byl 'threaded ring's'24, all

as clearly shown in the,figures. Between the clamping rings 24 and the valve. casing .nuts .25 through which are are interposed threaded or otherwise secured the lower The present application is a division "of ends of collars 26 on the camshaftjacket 1 16 constituting extensions thereof that su Through these from the casing 22 andare pieces-2'9 having pockets 0 for balls. 3'1 with which contactthe cams 32 on the cam shaft to operate the valvesas usual. Webs 33ratthe bases of the collars constitutingwalls .of the chambers-.27 form guides for the heads '29 of the valve jst'ems, these. webs being preferably cut by perfof rations or passages 34 to form communicationz h'etw'een the chambers 27 and the jackets.'16,.while mounted on the "stems below the heads. areidisks forming pistons 35 operat- 8 but such arrangement is only ancillary to nib 2 out, and as a mufiler for silencing the moving Irenders the valve-mechanism noiseless when" and Withdrawn through a pipe 38 at the other, passes throughthe various-intermediate bearings 20 of the cam shaft. By the provisions of my invention before alluded to involvingthe entire lubricating system of the engine, a flow is also set up from the jacket 16 through the main end bearings 19 and gear case 15 into the jack shaft acket the present invention, it being here suflicient to point out'that the cam shaft revolves 1n oil so that it is not only perfectly lubr'i cated both'as to its bearings and its cams, but is made noiseless inoperatiorl. The jacket 16 being constantly filled, it acts as a reservoir for supplying the chambers 27 in which the valve stems operate and into which entrance is 'freely gained through the passages 34:. I The oil thus inclosed in-the chamber 27 not only serves to lubricate the valve stems but also acts as a cooling agent that does more in. that itmakessuch lubrication extremely effective and the reciprocations of the pistons 35 on the valve stemschurn up the body and cause it to circulate with that'in'the jacket 16 so that overheating is prevented. It will be seen that the oil is constantly in motionand may be used overand over again. Furthermore, besides the lubricating function, it acts as acooling agent for the valve mechanism, as pointed parts. This last property is of particular value with respect tothe valve mechanism, the clatter of the valves, their springs36 and the contact of the cams 32 with the valv stems, being well known to constitute much of the noise attendant upon the running of aninternal combustion engine, especiallythat type known as the valve in head motor,

as it not only does away with the difficult.

oiling feature of this type of motor, but also dispenses-with the use of sever'al objectiona'ble parts, such as push rojds, pinned rollers,

. walking beams, grease cups, etc.

The inclosing of the cam shaft .30 and the valve,operatingdevices in ang'air tight, oil tight and dust proof casing containing a liberal supply of lubricating fluid, not only in operation but obviates-many disadvanttages otherwise encountered,.-such as insutfijcien't lubrication, inability-to cool the valve from the casing chamber bein guided in the oppositefwall cage heads and loss of temper in the exhaust valve spring. A still further advantage is obtained in the arrangement of parts I have adopted in that I am able to obviate the possibility of the pistons sucking air through the spaces surrounding the valve stems when the latter becomes worn, a circumstance which materially affects the operation of an [explosive engine when it is operated with a partly closed throttle. The valve parts being surrounded-With oil, prevents the entrance of the air into, the pistons at these points and permits the motor to run at low speeds with a perfectly timed movement,

even afterthe'motor has been subjected to longpcontinued service. I

I claim as my invention: I 1. ,The combination with an exploslve engine having a cylinder, a valve casing and a .valve stem projecting therefrom, of a cam shaft fo'rac'tuating the .valve stem and an oil holding jacket inclosing' the cam shaftand valve stem, the enginecylinder being arranged exteriorly of said jacket.

2. v The combination with an explosive engine'having a valve casing and a valve stem projecting therefrom, of a cam shaft for actuating the valve stem, an oil holding jacket inclosing'v the shaft and supporting the bearings thereof and a collar on the jacket inclosingv the valve stem and connect;

ed to the valve casing to support the jacket thereon.

an explosive engine, the combina-- tlOlfW-lth a valve casing, a chamberadj acent.

thereto and an oil reservoir communicating with the chamber, of a valve stem projecting from the easing into the chamber and a p1ston thereonfor maintaining a circulation of 011 between the chamber and reservoir 4. In an explosive engine, the combination,

with a valve casing, a chamber adjacent thereto and an oil reservoir communicating with the ehamber, of a valve stem projecting from the easing into the chamber, a piston thereon for maintaining a circulation of oil between the chamberand reservoir and a valve spring interposed between the piston and valve casing.

5 In an explosive engine, the combination with'a valve casing, and an oil chamber adjacent thereto,

and extending through-the thereof. L:

6. In an explosive en ine, the combinatio of' a valve stem projecting.

with a valve casing, an "oil chamber adjacent thereto," of. a valve stem projecting from the casing and-extending'through the chainber'-=being guided'in the opposite wall" thereof, an abutment; thereon within the? chamber and 'a-avalve sp'ring interposed be-.

tween the abutment and valve'casm 7. In an'explosive engine,'the com ination- {w th a valve .casing, and a v'alvestem pro fi ctingz theisafrmn, mi M Y l shaf; for actu 9x Emm @ii in ir iingjacket in Y c0312 thereon connecta comm I wounding the valv z iattex? warming in the gaging aha pison to operate the waive in. mm

dlrectmn, 

